Navien Error Code E438 [Fixed A-Z]

navien error code e438

The Navien error code E438 refers to improper operation of the circulation system. From what I have seen after working on many heaters over the years, it only appears in the Navien NPE A-type models. The most common reasons behind this issue are: Besides them, a faulty check valve and … Read More

Navien Tankless Water Heater Leaking [How To Fix]

navien tankless water heater leaking

A tankless water heater has very little time to heat the water and get it to the desired temperature. If there are any leaks in the system, you won’t get adequate hot water. It can also cause other issues in the heater in the future. So, what causes the Navien … Read More

Navien Tankless Water Heater Error Code E110 [Fixed A-Z]

navien tankless water heater error code e110

If you look up the Navien tankless water heater error code E110 in your owner’s manual, you’ll find that it refers to abnormal air pressure. There are many potential causes behind this issue. But from my own experience, I can tell you that the most common one is obstructions in … Read More

Navien Tankless Water Heater Humming Noise [Fully Explained]

navien tankless water heater humming noise

Hearing any abnormal sounds from your water heater will surely get you worried. Especially, if it’s a humming noise and it lasts for a while. So what causes the Navien tankless water heater humming noise? Having worked on many Navien water heaters over the years, I can tell you that … Read More

How To Reset Navien Tankless Water Heater [Explained A-Z]

how to reset navien tankless water heater

When you see an error code pop up on your water heater, your first instinct should be to reset your water heater. Sometimes, that’ll be enough to clear the error code. So, how to reset Navien tankless water heater? More often than not, the reset procedure will be incredibly easy … Read More

Navien Tankless Water Heater Keeps Tripping Breaker [Solved]

navien tankless water heater keeps tripping breaker

You’re in the middle of a hot shower and suddenly your water heater stops working. Annoyed at the situation, you go and see that the breaker is tripped. To make matters worse, it keeps on happening. So, why does the Navien tankless water heater keep tripping the breaker? From my … Read More

Navien Tankless Water Heater Exhaust Smells Like Gas [Fixed]

navien tankless water heater exhaust smells like gas

If you have a water heater that smells like gas, it could be a serious problem. You may have noticed a gas smell coming from the exhaust in your heater. So, what causes the Navein tankless water heater exhaust smells like gas issue? I’ve identified five common reasons that make … Read More

Navien Tankless Water Heater Ignition Failure [How To Fix]

navien tankless water heater ignition failure

The Navien E003 error code indicates ignition failure. I’ve talked with Navien customer support about this issue and fixed this error code in many heaters. The main reasons behind the Navien tankless water heater ignition failure and E003 error code are: I’ll talk about all these issues in detail along … Read More

Navien Water Heater Constantly Running [4 Easy Fixes]

navien water heater constantly running

The main reasons behind your Navien hot water heater running when not using any hot water based on my experience are: I’ll explain all these issues in detail along with their solutions in this guide. You’ll also learn about replacing the buffer tank in your Navien water heater if it … Read More